package com.atguigu.study.base;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;

/**
 * @auther zzyybs@126.com
 * @Date 2025-04-21 22:30
 * @Description: TODO
 */
public class SyncVSLockDemo
{

    public synchronized void m1()
    {
        System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
        //暂停几秒钟线程
        try {
            TimeUnit.SECONDS.sleep(4);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

    private final Lock lock = new ReentrantLock();

    public void m2()
    {
        if (lock.tryLock())
        {
            try
            {
                System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
                //暂停几秒钟线程
                try { TimeUnit.SECONDS.sleep(3); } catch (InterruptedException e) { e.printStackTrace(); }
            } finally {
                lock.unlock();
            }
        } else {
            System.out.println(Thread.currentThread().getName() + "\t" + "----抢锁失败，请重试");
        }
    }

    public void m3()
    {
        try
        {
            if (lock.tryLock(2L,TimeUnit.SECONDS))
            {
                try
                {
                    System.out.println(Thread.currentThread().getName() + "\t" + "----come in");
                    //暂停几秒钟线程
                    try { TimeUnit.SECONDS.sleep(1); } catch (InterruptedException e) { e.printStackTrace(); }
                } finally {
                    lock.unlock();
                }
            } else {
                System.out.println(Thread.currentThread().getName() + "\t" + "----超过2秒抢锁失败，请重试");
            }
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
    }

    public static void main(String[] args)
    {
        SyncVSLockDemo syncVSLockDemo = new SyncVSLockDemo();

        new Thread(() -> {
            syncVSLockDemo.m3();
        }, "t1").start();

        new Thread(() -> {
            syncVSLockDemo.m3();
        }, "t2").start();
    }
}
